Benchmark beta
Add Benchmark

#	Hashrate	1 thread	Size	Duration	CPU	Threads	Version
1	12450.97	518.79	1MH	80.315	2	24	6.5.0
2	10751.65	447.99	1MH	93.009	2	24	6.8.0
3	7884.69	328.53	1MH	126.828	2	24	6.7.0
4	7190.36	299.60	1MH	139.075	2	24	6.6.2
5	4157.14	346.43	1MH	240.550	1	12	6.12.1